Human knowledge is the parent of doubt.

We laugh heartily to see a whole flock of sheep jump because one did so. Might not one imagine that superior beings do the same, and for exactly the same reason?

The brains of a pedant however full, are vacant.

True joy is only hope put out of fear.

Men and statues that are admired ire an elevated situation have a very different effect upon us when we approach them; the first appear less than we imagined them, the last bigger.

The mind of man is this world's true dimension; and knowledge is the measure of the mind.

Human knowledge is the parent of doubt.